风险指引的核电厂应急柴油发电机返厂大修分析

Risk-Informed Analysis of Nuclear Power Plant Emergency Diesel Generator Returning to Factory for Overhaul

为了支持田湾核电站1、2号机组的1台应急柴油发电机进行返厂大修,本文提出了1台应急柴油发电机不可用的恢复时间的优化方案,并采用确定论与概率论相结合的风险指引型方法对优化方案的可行性进行了分析。分析结果表明,1台应急柴油发电机不可用的恢复时间优化满足相关法规导则和传统工程分析的要求,且对电厂带来的风险是很小的、可接受的。因此,可以开展1台应急柴油发电机进行返厂大修工作。

In order to support an emergency diesel generator of Tianwan Nuclear Power Plant Units 1 and 2 for returning to the factory for overhaul,this paper proposes an optimization plan for the unavailability recovery time of an emergency diesel generator,and adopts a combination of determinism and probability theory.The risk-informed approach analyzes the feasibility of the optimization plan.The analysis results show that the unavailability recovery time optimization of an emergency diesel generator meets the requirements of relevant regulations and guidelines and traditional engineering analysis,and the risk to the power plant is small and acceptable.An emergency diesel generator can be returned to the factory for overhaul.